Method and system for automatically packaging comminuted silicon

A method of automatic packing of comminuted silicon, comprising the steps of

• a) providing an inner bag in a first shaping vessel;
• b) spreading out an opening of the inner bag and positioning the opening above a lip of a first filling funnel of a filling unit;
• c) filling the inner bag with comminuted silicon, with the comminuted silicon passing through the first filling funnel into the inner bag;
• d) welding the inner bag in a welding unit, wherein the opening of the inner bag is folded together by inward folding of two opposite inner bag sides such that two inner bag edges are opposite and parallel to one another and form a fold with a channel, and a vacuum welder applied to the fold from outside sucks air out of the inner bag through the channel and welds the inner bag;
• e) transferring the inner bag into an outer bag, wherein the outer bag is provided in a second shaping vessel, an opening of the outer bag is spread out and the inner bag is transferred into the outer bag;
• and
• f) welding the outer bag.